气候变化领域集成服务门户(CCPortal): The Relationship Between Convective Clustering and Mean Tropical Climate in Aquaplanet Simulations

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DOI	10.1029/2020MS002070
	The Relationship Between Convective Clustering and Mean Tropical Climate in Aquaplanet Simulations
	Popp M.; Lutsko N.J.; Bony S.
发表日期	2020
ISSN	19422466
卷号	12 期号:8
英文摘要	Convective clustering, the spatial organization of tropical deep convection, can manifest itself in two ways: through a decrease in the total area covered by convection and/or through a decrease in the number of convective areas. Much of our current understanding of convective clustering comes from simulations in idealized radiative convective equilibrium (RCE) configurations. In these simulations the two forms of convective clustering tend to covary, and their individual effects on the climate are thus hard to disentangle. This study shows that in aquaplanet simulations with more realistic boundary conditions, such as meridional gradients of surface temperature and rotational forces, the two aspects of convective clustering are not equivalent and are associated with different impacts on the large-scale climate. For instance, reducing the convective area in the equatorial region in the aquaplanet simulations results in broader meridional humidity and rain distributions and in lower tropospheric temperatures throughout the tropics. By contrast, the number of convective regions primarily impacts the zonal variance of humidity-related quantities in the aquaplanet simulations, as the distribution of convective regions affects the size of the subsidence regions and thereby the moistening influence of convective regions. The aquaplanet simulations confirm many other qualitative results from RCE simulations, such as a reduction of equatorial tropospheric humidity when the area covered by convection diminishes. © 2020. The Authors.
语种	英语
scopus关键词	Troposphere; Equatorial regions; Meridional gradients; Radiative-convective equilibrium; Rotational forces; Spatial organization; Surface temperatures; Tropospheric humidity; Tropospheric temperature; Tropics; atmospheric convection; boundary condition; cluster analysis; meridional circulation; sea surface temperature; simulation; tropical environment; troposphere
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156659
作者单位	Laboratoire de Météorologie Dynamique (LMD/IPSL), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS), École Polytechnique, École Normale Supérieure, Paris, France; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States
推荐引用方式 GB/T 7714	Popp M.,Lutsko N.J.,Bony S.. The Relationship Between Convective Clustering and Mean Tropical Climate in Aquaplanet Simulations[J],2020,12(8).
APA	Popp M.,Lutsko N.J.,&Bony S..(2020).The Relationship Between Convective Clustering and Mean Tropical Climate in Aquaplanet Simulations.Journal of Advances in Modeling Earth Systems,12(8).
MLA	Popp M.,et al."The Relationship Between Convective Clustering and Mean Tropical Climate in Aquaplanet Simulations".Journal of Advances in Modeling Earth Systems 12.8(2020).